macOS is the operating system for Mac.

Posts under macOS tag

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FSKit caching by kernel and performance
I've faced with some performance issues developing my readonly filesystem using fskit. For below screenshot: enumerateDirectory returns two hardcoded items, compiled with release config 3000 readdirsync are done from nodejs. macos 15.5 (24F74) I see that getdirentries syscall takes avg 121us. Because all other variables are minimised, it seems like it's fskit<->kernel overhead. This itself seems like a big number. I need to compare it with fuse though to be sure. But what fuse has and fskit seams don't (I checked every page in fskit docs) is kernel caching. Fuse supports: caching lookups (entry_timeout) negative lookups (entry_timeout) attributes (attr_timeout) readdir (via opendir cache_readdir and keep_cache) read and write ops but thats another topic. And afaik it works for both readonly and read-write file systems, because kernel can assume (if client is providing this) that cache is valid until kernel do write operations on corresponding inodes (create, setattr, write, etc). Questions are: is 100+us reasonable overhead for fskit? is there any way to do caching by kernel. If not currently, any plans to implement? Also, additional performance optimisation could be done by providing lower level api when we can operate with raw inodes (Uint64), this will eliminate overhead from storing, removing and retrieving FSItems in hashmap.
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Jul ’25
Local Network permission appears to be ignored after reboot, even though it was granted
We have a Java application built for macOS. On the first launch, the application prompts the user to allow local network access. We've correctly added the NSLocalNetworkUsageDescription key to the Info.plist, and the provided description appears in the system prompt. After the user grants permission, the application can successfully connect to a local server using its hostname. However, the issue arises after the system is rebooted. When the application is launched again, macOS does not prompt for local network access a second time—which is expected, as the permission was already granted. Despite this, the application is unable to connect to the local server. It appears the previously granted permission is being ignored after a reboot. A temporary workaround is to manually toggle the Local Network permission off and back on via System Settings > Privacy & Security, which restores connectivity—until the next reboot. This behavior is highly disruptive, both for us and for a significant number of our users. We can reproduce this on multiple systems... The issues started from macOS Sequoia 15.0 By opening the application bundle using "Show Package Contents," we can launch the application via "JavaAppLauncher" without any issues. Once started, the application is able to connect to our server over the local network. This seems to bypass the granted permissions? "JavaAppLauncher" is also been used in our Info.plist file
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Jul ’25
How do I maintain different navigation selections on a per-scene basis in SwiftUI?
I’ll preface this by saying I’ve submitted a DTS ticket with essentially this exact text, but I thought I’d also post about it here to get some additional input. Apple engineers: the case ID is 14698374, for your reference. I have an observable class, called NavigationModel, that powers navigation in my SwiftUI app. It has one important property, navigationSelection, that stores the currently selected view. This property is passed to a List in the sidebar column of a NavigationSplitView with two columns. The list has NavigationLinks that accept that selection as a value parameter. When a NavigationLink is tapped, the detail column shows the appropriate detail view per the navigationSelection property’s current value via a switch statement. (This navigationSelection stores an enum value.) This setup allows for complete programmatic navigation as that selection is effectively global. From anywhere in the app — any button, command, or app intent — the selection can be modified since the NavigationModel class uses the @Observable Swift macro. In the app’s root file, an instance of the NavigationModel is created, added as an app intent dependency, and assigned (might be the wrong verb here, but you get it) to ContentView, which houses the NavigationSplitView code. The problem lies when more than one window is opened. Because this is all just one instance of NavigationModel — initialized in the app’s root file — the navigation selection is shared across windows. That is, there is no way for one window to show a view and another to show another view — they’re bound to the same instance of NavigationModel. Again, this was done so that app intents and menu bar commands can modify the navigation selection, but this causes unintended behavior. I checked Apple’s sample projects, namely the “Accelerating app interactions with App Intents” (https://developer.apple.com/documentation/appintents/acceleratingappinteractionswithappintents) and “Adopting App Intents to support system experiences” (https://developer.apple.com/documentation/appintents/adopting-app-intents-to-support-system-experiences) projects, to see how Apple recommends handling this case. Both of these projects have intents to display a view by modifying the navigation selection. They also have the same unintended behavior I’m experiencing in my app. If two windows are open, they share the navigation selection. I feel pretty stupid asking for help with this, but I’ve tried a lot to get it to work the way I want it to. My first instinct was to create a new instance of NavigationModel for each window, and that’s about 90% of the way there, but app intents fail when there are no open windows because there are no instances of NavigationModel to modify. I also tried playing with FocusedValue and SceneStorage, but those solutions also didn’t play well with app intents and added too much convoluted code for what should be a simple issue. In total, what I want is: A window/scene-specific navigation selection property that works across TabViews and NavigationSplitViews A way to reliably modify that property’s value across the app for the currently focused window A way to set a value as a default, so when the app launches with a window, it automatically selects a value in the detail column The navigation selection to reset across app and window launches, restoring the default selection Does anyone know how to do this? I’ve scoured the internet, but again, no dice. Usually Apple’s sample projects are great with this sort of thing, but all of their projects that have scene-specific navigation selection with NavigationSplitView don’t have app intents. 🤷‍♂️ If anyone needs additional code samples, I’d be happy to provide them, but it’s basically a close copy of Apple’s own sample code found in those two links.
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Jul ’25
Feature Proposal: CrossRun
Hi everyone! I've considered this — what if Apple added a native system-wide feature in all of iOS, iPadOS, and macOS called “CrossRun” where you can natively execute non-App Store software like Windows or Linux apps natively on your device? But not in a sluggish emulator—this would use intelligent Apple-signed Just-In-Time (JIT) compilation inside the virtual containers, and the experience would actually perform fast and feel natural. This is my vision for CrossRun: Every developer, student, creative professional, and enterprise user who relies on specialized software—whether it’s legacy Windows tools, Linux-only applications, or vintage DOS and Classic Mac utilities—feels the pain of platform lock‑in. Artists can’t run niche Linux‑based graphics programs on their iPads. Engineers can’t test x64‑only binaries on Apple Silicon without juggling emulators. Retro‑gaming fans miss their favorite DOS titles. Even enterprises struggle to standardize on Apple hardware because critical Windows‑only applications won’t run seamlessly. If we don’t push for CrossRun now, the Apple ecosystem remains siloed: iPads and iPhones will continue limited to App Store apps, Macs will still need multiple third‑party VM tools, and countless workflows stay fragmented across devices. That means slower development cycles, extra licensing costs for virtualization software, and lost opportunities for education, creativity, and business efficiency. Without CrossRun’s universal runtime, we’ll still be rebooting into different environments or paying for separate virtualization apps—year after year. Apple already provides the building blocks: Rosetta 2, Virtualization.framework, Apple Silicon—and QEMU thrives as open‑source, battle‑tested code. With the next wave of Apple Silicon devices on the horizon, demand for cross‑architecture support, legacy‑app compatibility, and enterprise containerization is only growing. Delaying another year will cost developers, businesses, and users real time and money. Let’s show Apple that the community is ready for a truly universal, system‑integrated solution—right now. Key features we should demand in CrossRun: Built‑in Apple‑signed QEMU for all ISAs (x86, ARM, RISC‑V, PowerPC, 68k, MIPS, etc.) Rosetta 2 JIT for seamless macOS and Windows x64 support Metal‑backed 3D GPU passthrough and Vulkan→Metal / Direct3D→Metal translation Downloadable OS and app containers via the App Store or verified repositories (Ubuntu, Windows ARM/x64, Android, Haiku, ReactOS, FreeBSD, retro OSes) Predictive ML pre‑warm cache to speed cold starts Dynamic resource scaling (CPU, GPU, RAM) per container iCloud‑synced snapshots and shareable VM links for cross‑device continuity Customizable on‑screen controls (D‑pad, virtual buttons, trackpad, keyboard) on iPhone, iPad, and macOS Secure sandboxing via Virtualization.framework with VM disk encryption and MDM policy enforcement Virtual LAN and VPN passthrough for container networking Developer tooling (crossrunctl CLI, Xcode debugger integration, CI/CD support) Plugin ecosystem and container SDK for community‑published templates and translation layers Let Apple know it’s time to bake CrossRun into the system and unlock a universal runtime for every app, past and future, across iOS, iPadOS, and macOS.
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Jul ’25
On macOS Tahoe (26.0), the call sysctlbyname for kern.osproductversion returns 16.0
The objective C code using the kernel API ‘sysctlbyname’ for ‘kern.osproductversion’ returns 16.0 instead of 26.0 on macOS Tahoe. sysctlbyname("kern.osproductversion", version, &size, NULL, 0) The command ‘sysctl kern.osproductversion’ returns ‘kern.osproductversion: 26.0’ on same macOS Tahoe. Note: The objective C code was built using Xcode 16.3.
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Jul ’25
Is the new iPadOS/macOS 26 help icon available in SF Symbols?
Under macOS 26 and iPadOS, the Help menu in many cases has a menu item for "App Help". This item has the following icon: I need to use this in my own app. I am unable to find this icon in SF Symbols 7 beta. I've scanned all of the icons under "What's New". I've searched for "help", "light", and "bulb" and this icon does not appear. Does anyone know if it's even a new SF Symbol? Or does anyone know of a way to use this icon?
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Jul ’25
Unable to package in UE5.6
Im new in the Mac area but for sure not UE. Windows is a long process to packaging but it could be done. All the documentation for Epic and from the internet is basically non existent with exactly how to package a project within UE. I have Xcode installed which makes sense, agreed to terms and install for MacOS, I've been able to make a project for several weeks now and want to package for a test run for my friends to play on Windows. Now I just get this in the log: UATHelper: Packaging (Mac): ERROR: Failed to finalize the .app with Xcode. Check the log for more information UATHelper: Packaging (Mac): Trace written to file /Users/rileysleger/Library/Logs/Unreal Engine/LocalBuildLogs/UBA-ProjectNightTerror-Mac-Development.uba with size 12.6kb UATHelper: Packaging (Mac): Total time in Unreal Build Accelerator local executor: 8.12 seconds UATHelper: Packaging (Mac): Result: Failed (OtherCompilationError) UATHelper: Packaging (Mac): Total execution time: 9.71 seconds PackagingResults: Error: Failed to finalize the .app with Xcode. Check the log for more information UATHelper: Packaging (Mac): Took 9.77s to run dotnet, ExitCode=6 UATHelper: Packaging (Mac): UnrealBuildTool failed. See log for more details. (/Users/rileysleger/Library/Logs/Unreal Engine/LocalBuildLogs/UBA-ProjectNightTerror-Mac-Development.txt) UATHelper: Packaging (Mac): AutomationTool executed for 0h 0m 10s UATHelper: Packaging (Mac): AutomationTool exiting with ExitCode=6 (6) UATHelper: Packaging (Mac): RunUAT ERROR: AutomationTool was unable to run successfully. Exited with code: 6 PackagingResults: Error: AutomationTool was unable to run successfully. Exited with code: 6 PackagingResults: Error: Unknown Error This absolutely makes no sense to me. Anyone have ideas?
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Jul ’25
Set edge effect style in AppKit
In macOS 26 beta 2 it is possible to set an edge effect style via UIKit using the .scrollEdgeEffectStyle property. (note: I haven't tested this, I'm just looking at the documentation). See: https://developer.apple.com/documentation/swiftui/view/scrolledgeeffectstyle(_:for:) Is there an equivalent API for AppKit-based apps? I can't seem to find any additions in NSView or NSScrollView or elsewhere that seem relevant. Scroll edge effects are mentioned in the "Build an AppKit app with the new design" talk here, which heavily implies it must be possible from AppKit: https://developer.apple.com/videos/play/wwdc2025/310/?time=567
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Jul ’25
How many instances of the same NEFilterDataProvider can there be in a running NE?
[Q] How many instances of the same NEFilterDataProvider subclass can there be in a single running Network Extension at any given time? I would expect that there can be only 1 instance but I'm looking at a memgraph where 2 instances are listed. As it's the Network Extension framework that is responsible for creating, starting and stopping these instances, this is rather strange.
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Jul ’25
Cursor Misalignment When Selecting List Options – macOS Tahoe 26.0 Developer Beta 2
Since updating my MacBook Air to macOS Tahoe 26.0 Developer Beta 2, I’ve encountered a persistent cursor misalignment issue: When interacting with lists or contextual menus, the cursor’s visual position does not align with what it actually selects. The system registers the cursor slightly above where it appears, causing clicks to select the wrong option or fail to register. As a temporary workaround, I can sometimes position the cursor off-target and press Enter to select, but this is a frustrating and inefficient workaround. The issue persists after a restart and appears across multiple areas of the OS: Right-clicking an app in the Dock to open the contextual menu → cursor highlights an incorrect item relative to its position. In System Settings menus. Even on the Feedback Assistant site when selecting issue categories. Steps to Reproduce: 1️⃣ Update to macOS Tahoe 26.0 Developer Beta 2 on MacBook Air. 2️⃣ Right-click on any open application in the Dock. 3️⃣ Attempt to select an option from the list that appears. 4️⃣ Observe that the cursor highlights or interacts with a different option than where the cursor is visibly located. Notes: Issue is consistent across reboots. Affects workflow and general navigation. Temporary workaround using keyboard navigation is insufficient for productivity. FB Number: FB18531124 If others are seeing this as well, please confirm below so Apple can prioritize investigation.
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Jul ’25
Ask Each Time on macOS doesn't not allow empty selection
Hello! I'm facing a strange behavior on macOS related to Ask Each Time, which works fine on iOS. I've an App Intent that declares a parameter like so: @Parameter( title: "Tags", description: "Tags to add to the link.", optionsProvider: TagsOptionsProvider() ) var tags: [String]? The TagsOptionProvider is like this: struct TagsOptionsProvider: DynamicOptionsProvider { @Dependency private var modelCoordinator: ModelCoordinator @MainActor func results() async throws -> [String] { return modelCoordinator.tags().compactMap { $0.name } } } Now, the issue comes if I create a shortcut where for the tags parameter the user selects the magic variable Ask Each Time. On iOS, when the user is presented with the selector, they can simply tap 'Done' without selecting any value (the user does not want to include any tag). The problem is that on macOS the 'Done' button is disabled if there's no selection. See both behaviors: iOS: macOS: Question: Is there a way to let macOS continue even if the user doesn't select any of the available options like on iOS? I've tried declaring the tags para meter as Optional (like on the screenshot) and non-optional, both cases show the same behavior. Environment: iOS 18.5 macOS 15.5
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Jul ’25
Glitch on buttons in all types of OS of Apple ecosystem
as a beta tester I am trying to explore the OS on multiple platforms like iO, iPadOS, MacOS, WatchOS. While on trying to use beta 1 have few issues and reported to Apple with analytics as I do for better improvements. But, in beta 2 there is an issue of glitches on UI. This also tried to report. But, while am trying record screen I can not see in that video after the screen record. But, in reality I can see that glitch with eyes. as everyone know without evidence we can not report the same with tickets properly and they also can not resolve the issues. It’s affecting on all types of OS platforms of Apple buttons and search positions etc. one more thing I absorbed is while am trying use overlay player and browse the safari or any apple developer apps which are full screen the devices are freezing and not responding and after hard restart those are starting after 10mins. As per my knowledge. Those are going through the memory overflow issue.
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Jul ’25
MacBook Air (M2, 2023) Randomly Freezes After Sleep – Black Screen with Cursor Only
Since a recent macOS update (around one month ago), I’ve been experiencing a random issue on my MacBook Air (2023, M2). After the device enters sleep mode and I try to wake it, sometimes the screen stays black with only the cursor visible. The issue occurs randomly — not every time — but frequently enough to impact daily use. The system becomes completely unresponsive, and the only recovery method is a forced restart (holding the power button). Steps to Reproduce: 1. Leave the MacBook idle until it enters sleep automatically. 2. Wait for 10–30+ minutes. 3. Attempt to wake it using the keyboard, trackpad, or by opening the lid. 4. Randomly, the system fails to wake properly: screen turns on, shows a black background with a movable cursor, but nothing else appears. Expected Result: The system wakes normally and restores to the previous desktop session. Actual Result: The system randomly freezes on a black screen with a visible cursor. No user interface or login prompt appears. Requires a hard restart. System Information: • Device: MacBook Air 13”, M2, 2023 • macOS Version: [Insert exact version, e.g., macOS Sonoma 14.5] • Issue Since: Around one month ago (possibly after latest macOS update) • Peripherals: [Mention any external devices if applicable] • Reproducibility: Random (approximately 30–50% of the time after longer sleep) Additional Notes: • Issue is not consistent; sometimes the system wakes as expected. • Occurs regardless of whether on battery or plugged in. • No external monitors or USB accessories are connected when this happens.
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Jun ’25
Is it possible to animate the accessibility frame on iOS and macOS?
Say I have a UI element that moves on the screen. Is it possible to update its accessibility frame as it moves while VoiceOver is focused on it? From my tests, VoiceOver ignores UIAccessibilityLayoutChangedNotification if it's sent repeatedly in a short period of time on iOS, while sending NSAccessibilityLayoutChangedNotification on macOS triggers VoiceOver to reannounce the focused element repeatedly.
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Jul ’25
MacOS Sequoia support for VoiceOver AppleScript automation
We are unable to programmatically enable AppleScript automation for VoiceOver on macOS 15 (Sequoia) In macOS 15, Apple moved the VoiceOver configuration from: ~/Library/Preferences/com.apple.VoiceOver4/default.plist to a sandboxed path: ~/Library/Group Containers/group.com.apple.VoiceOver/Library/Preferences/com.apple.VoiceOver4/default.plist Steps to Reproduce: Use a macOS 15 (ARM64) machine (or GitHub Actions runner image with macOS 15 ARM). Open VoiceOver: open /System/Library/CoreServices/VoiceOver.app Set the SCREnableAppleScript flag to true in the new sandboxed .plist: plutil -replace SCREnableAppleScript -bool true ~/Library/Group\ Containers/group.com.apple.VoiceOver/Library/Preferences/com.apple.VoiceOver4/default.plist Confirm csrutil status is either disabled or not enforced. Attempt to control VoiceOver via AppleScript (e.g., using osascript voiceOverPerform.applescript). Observe that the AppleScript command fails with no useful output (exit code 1), and VoiceOver does not respond to automation.
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Jun ’25
Is it possible to install configuration profile on macOS programmatically?
I want to install Chrome extension via configuration profile without user needing to go to System Settings and install profile manually. Can i install configuraation profile by making user only interact with my app?
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960
Activity
Jul ’25
FSKit caching by kernel and performance
I've faced with some performance issues developing my readonly filesystem using fskit. For below screenshot: enumerateDirectory returns two hardcoded items, compiled with release config 3000 readdirsync are done from nodejs. macos 15.5 (24F74) I see that getdirentries syscall takes avg 121us. Because all other variables are minimised, it seems like it's fskit<->kernel overhead. This itself seems like a big number. I need to compare it with fuse though to be sure. But what fuse has and fskit seams don't (I checked every page in fskit docs) is kernel caching. Fuse supports: caching lookups (entry_timeout) negative lookups (entry_timeout) attributes (attr_timeout) readdir (via opendir cache_readdir and keep_cache) read and write ops but thats another topic. And afaik it works for both readonly and read-write file systems, because kernel can assume (if client is providing this) that cache is valid until kernel do write operations on corresponding inodes (create, setattr, write, etc). Questions are: is 100+us reasonable overhead for fskit? is there any way to do caching by kernel. If not currently, any plans to implement? Also, additional performance optimisation could be done by providing lower level api when we can operate with raw inodes (Uint64), this will eliminate overhead from storing, removing and retrieving FSItems in hashmap.
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2
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1
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274
Activity
Jul ’25
RemoteImmersiveSpace for RealityView
I have discovered that RemoteImmersiveSpace is limited to utilizing the structure of the CompositorContent protocol, precluding direct invocation of RealityView. Consequently, I am interested in understanding the appropriate method for integrating CompositorContent within RemoteImmersiveSpace. Thanks.
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451
Activity
Jul ’25
Local Network permission appears to be ignored after reboot, even though it was granted
We have a Java application built for macOS. On the first launch, the application prompts the user to allow local network access. We've correctly added the NSLocalNetworkUsageDescription key to the Info.plist, and the provided description appears in the system prompt. After the user grants permission, the application can successfully connect to a local server using its hostname. However, the issue arises after the system is rebooted. When the application is launched again, macOS does not prompt for local network access a second time—which is expected, as the permission was already granted. Despite this, the application is unable to connect to the local server. It appears the previously granted permission is being ignored after a reboot. A temporary workaround is to manually toggle the Local Network permission off and back on via System Settings > Privacy & Security, which restores connectivity—until the next reboot. This behavior is highly disruptive, both for us and for a significant number of our users. We can reproduce this on multiple systems... The issues started from macOS Sequoia 15.0 By opening the application bundle using "Show Package Contents," we can launch the application via "JavaAppLauncher" without any issues. Once started, the application is able to connect to our server over the local network. This seems to bypass the granted permissions? "JavaAppLauncher" is also been used in our Info.plist file
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1
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144
Activity
Jul ’25
How do I maintain different navigation selections on a per-scene basis in SwiftUI?
I’ll preface this by saying I’ve submitted a DTS ticket with essentially this exact text, but I thought I’d also post about it here to get some additional input. Apple engineers: the case ID is 14698374, for your reference. I have an observable class, called NavigationModel, that powers navigation in my SwiftUI app. It has one important property, navigationSelection, that stores the currently selected view. This property is passed to a List in the sidebar column of a NavigationSplitView with two columns. The list has NavigationLinks that accept that selection as a value parameter. When a NavigationLink is tapped, the detail column shows the appropriate detail view per the navigationSelection property’s current value via a switch statement. (This navigationSelection stores an enum value.) This setup allows for complete programmatic navigation as that selection is effectively global. From anywhere in the app — any button, command, or app intent — the selection can be modified since the NavigationModel class uses the @Observable Swift macro. In the app’s root file, an instance of the NavigationModel is created, added as an app intent dependency, and assigned (might be the wrong verb here, but you get it) to ContentView, which houses the NavigationSplitView code. The problem lies when more than one window is opened. Because this is all just one instance of NavigationModel — initialized in the app’s root file — the navigation selection is shared across windows. That is, there is no way for one window to show a view and another to show another view — they’re bound to the same instance of NavigationModel. Again, this was done so that app intents and menu bar commands can modify the navigation selection, but this causes unintended behavior. I checked Apple’s sample projects, namely the “Accelerating app interactions with App Intents” (https://developer.apple.com/documentation/appintents/acceleratingappinteractionswithappintents) and “Adopting App Intents to support system experiences” (https://developer.apple.com/documentation/appintents/adopting-app-intents-to-support-system-experiences) projects, to see how Apple recommends handling this case. Both of these projects have intents to display a view by modifying the navigation selection. They also have the same unintended behavior I’m experiencing in my app. If two windows are open, they share the navigation selection. I feel pretty stupid asking for help with this, but I’ve tried a lot to get it to work the way I want it to. My first instinct was to create a new instance of NavigationModel for each window, and that’s about 90% of the way there, but app intents fail when there are no open windows because there are no instances of NavigationModel to modify. I also tried playing with FocusedValue and SceneStorage, but those solutions also didn’t play well with app intents and added too much convoluted code for what should be a simple issue. In total, what I want is: A window/scene-specific navigation selection property that works across TabViews and NavigationSplitViews A way to reliably modify that property’s value across the app for the currently focused window A way to set a value as a default, so when the app launches with a window, it automatically selects a value in the detail column The navigation selection to reset across app and window launches, restoring the default selection Does anyone know how to do this? I’ve scoured the internet, but again, no dice. Usually Apple’s sample projects are great with this sort of thing, but all of their projects that have scene-specific navigation selection with NavigationSplitView don’t have app intents. 🤷‍♂️ If anyone needs additional code samples, I’d be happy to provide them, but it’s basically a close copy of Apple’s own sample code found in those two links.
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145
Activity
Jul ’25
Feature Proposal: CrossRun
Hi everyone! I've considered this — what if Apple added a native system-wide feature in all of iOS, iPadOS, and macOS called “CrossRun” where you can natively execute non-App Store software like Windows or Linux apps natively on your device? But not in a sluggish emulator—this would use intelligent Apple-signed Just-In-Time (JIT) compilation inside the virtual containers, and the experience would actually perform fast and feel natural. This is my vision for CrossRun: Every developer, student, creative professional, and enterprise user who relies on specialized software—whether it’s legacy Windows tools, Linux-only applications, or vintage DOS and Classic Mac utilities—feels the pain of platform lock‑in. Artists can’t run niche Linux‑based graphics programs on their iPads. Engineers can’t test x64‑only binaries on Apple Silicon without juggling emulators. Retro‑gaming fans miss their favorite DOS titles. Even enterprises struggle to standardize on Apple hardware because critical Windows‑only applications won’t run seamlessly. If we don’t push for CrossRun now, the Apple ecosystem remains siloed: iPads and iPhones will continue limited to App Store apps, Macs will still need multiple third‑party VM tools, and countless workflows stay fragmented across devices. That means slower development cycles, extra licensing costs for virtualization software, and lost opportunities for education, creativity, and business efficiency. Without CrossRun’s universal runtime, we’ll still be rebooting into different environments or paying for separate virtualization apps—year after year. Apple already provides the building blocks: Rosetta 2, Virtualization.framework, Apple Silicon—and QEMU thrives as open‑source, battle‑tested code. With the next wave of Apple Silicon devices on the horizon, demand for cross‑architecture support, legacy‑app compatibility, and enterprise containerization is only growing. Delaying another year will cost developers, businesses, and users real time and money. Let’s show Apple that the community is ready for a truly universal, system‑integrated solution—right now. Key features we should demand in CrossRun: Built‑in Apple‑signed QEMU for all ISAs (x86, ARM, RISC‑V, PowerPC, 68k, MIPS, etc.) Rosetta 2 JIT for seamless macOS and Windows x64 support Metal‑backed 3D GPU passthrough and Vulkan→Metal / Direct3D→Metal translation Downloadable OS and app containers via the App Store or verified repositories (Ubuntu, Windows ARM/x64, Android, Haiku, ReactOS, FreeBSD, retro OSes) Predictive ML pre‑warm cache to speed cold starts Dynamic resource scaling (CPU, GPU, RAM) per container iCloud‑synced snapshots and shareable VM links for cross‑device continuity Customizable on‑screen controls (D‑pad, virtual buttons, trackpad, keyboard) on iPhone, iPad, and macOS Secure sandboxing via Virtualization.framework with VM disk encryption and MDM policy enforcement Virtual LAN and VPN passthrough for container networking Developer tooling (crossrunctl CLI, Xcode debugger integration, CI/CD support) Plugin ecosystem and container SDK for community‑published templates and translation layers Let Apple know it’s time to bake CrossRun into the system and unlock a universal runtime for every app, past and future, across iOS, iPadOS, and macOS.
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1
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233
Activity
Jul ’25
On macOS Tahoe (26.0), the call sysctlbyname for kern.osproductversion returns 16.0
The objective C code using the kernel API ‘sysctlbyname’ for ‘kern.osproductversion’ returns 16.0 instead of 26.0 on macOS Tahoe. sysctlbyname("kern.osproductversion", version, &size, NULL, 0) The command ‘sysctl kern.osproductversion’ returns ‘kern.osproductversion: 26.0’ on same macOS Tahoe. Note: The objective C code was built using Xcode 16.3.
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2
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0
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293
Activity
Jul ’25
Is the new iPadOS/macOS 26 help icon available in SF Symbols?
Under macOS 26 and iPadOS, the Help menu in many cases has a menu item for "App Help". This item has the following icon: I need to use this in my own app. I am unable to find this icon in SF Symbols 7 beta. I've scanned all of the icons under "What's New". I've searched for "help", "light", and "bulb" and this icon does not appear. Does anyone know if it's even a new SF Symbol? Or does anyone know of a way to use this icon?
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2
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0
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194
Activity
Jul ’25
Unable to package in UE5.6
Im new in the Mac area but for sure not UE. Windows is a long process to packaging but it could be done. All the documentation for Epic and from the internet is basically non existent with exactly how to package a project within UE. I have Xcode installed which makes sense, agreed to terms and install for MacOS, I've been able to make a project for several weeks now and want to package for a test run for my friends to play on Windows. Now I just get this in the log: UATHelper: Packaging (Mac): ERROR: Failed to finalize the .app with Xcode. Check the log for more information UATHelper: Packaging (Mac): Trace written to file /Users/rileysleger/Library/Logs/Unreal Engine/LocalBuildLogs/UBA-ProjectNightTerror-Mac-Development.uba with size 12.6kb UATHelper: Packaging (Mac): Total time in Unreal Build Accelerator local executor: 8.12 seconds UATHelper: Packaging (Mac): Result: Failed (OtherCompilationError) UATHelper: Packaging (Mac): Total execution time: 9.71 seconds PackagingResults: Error: Failed to finalize the .app with Xcode. Check the log for more information UATHelper: Packaging (Mac): Took 9.77s to run dotnet, ExitCode=6 UATHelper: Packaging (Mac): UnrealBuildTool failed. See log for more details. (/Users/rileysleger/Library/Logs/Unreal Engine/LocalBuildLogs/UBA-ProjectNightTerror-Mac-Development.txt) UATHelper: Packaging (Mac): AutomationTool executed for 0h 0m 10s UATHelper: Packaging (Mac): AutomationTool exiting with ExitCode=6 (6) UATHelper: Packaging (Mac): RunUAT ERROR: AutomationTool was unable to run successfully. Exited with code: 6 PackagingResults: Error: AutomationTool was unable to run successfully. Exited with code: 6 PackagingResults: Error: Unknown Error This absolutely makes no sense to me. Anyone have ideas?
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2
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293
Activity
Jul ’25
Set edge effect style in AppKit
In macOS 26 beta 2 it is possible to set an edge effect style via UIKit using the .scrollEdgeEffectStyle property. (note: I haven't tested this, I'm just looking at the documentation). See: https://developer.apple.com/documentation/swiftui/view/scrolledgeeffectstyle(_:for:) Is there an equivalent API for AppKit-based apps? I can't seem to find any additions in NSView or NSScrollView or elsewhere that seem relevant. Scroll edge effects are mentioned in the "Build an AppKit app with the new design" talk here, which heavily implies it must be possible from AppKit: https://developer.apple.com/videos/play/wwdc2025/310/?time=567
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7
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388
Activity
Jul ’25
How many instances of the same NEFilterDataProvider can there be in a running NE?
[Q] How many instances of the same NEFilterDataProvider subclass can there be in a single running Network Extension at any given time? I would expect that there can be only 1 instance but I'm looking at a memgraph where 2 instances are listed. As it's the Network Extension framework that is responsible for creating, starting and stopping these instances, this is rather strange.
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6
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174
Activity
Jul ’25
Cursor Misalignment When Selecting List Options – macOS Tahoe 26.0 Developer Beta 2
Since updating my MacBook Air to macOS Tahoe 26.0 Developer Beta 2, I’ve encountered a persistent cursor misalignment issue: When interacting with lists or contextual menus, the cursor’s visual position does not align with what it actually selects. The system registers the cursor slightly above where it appears, causing clicks to select the wrong option or fail to register. As a temporary workaround, I can sometimes position the cursor off-target and press Enter to select, but this is a frustrating and inefficient workaround. The issue persists after a restart and appears across multiple areas of the OS: Right-clicking an app in the Dock to open the contextual menu → cursor highlights an incorrect item relative to its position. In System Settings menus. Even on the Feedback Assistant site when selecting issue categories. Steps to Reproduce: 1️⃣ Update to macOS Tahoe 26.0 Developer Beta 2 on MacBook Air. 2️⃣ Right-click on any open application in the Dock. 3️⃣ Attempt to select an option from the list that appears. 4️⃣ Observe that the cursor highlights or interacts with a different option than where the cursor is visibly located. Notes: Issue is consistent across reboots. Affects workflow and general navigation. Temporary workaround using keyboard navigation is insufficient for productivity. FB Number: FB18531124 If others are seeing this as well, please confirm below so Apple can prioritize investigation.
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2
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1
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200
Activity
Jul ’25
Ask Each Time on macOS doesn't not allow empty selection
Hello! I'm facing a strange behavior on macOS related to Ask Each Time, which works fine on iOS. I've an App Intent that declares a parameter like so: @Parameter( title: "Tags", description: "Tags to add to the link.", optionsProvider: TagsOptionsProvider() ) var tags: [String]? The TagsOptionProvider is like this: struct TagsOptionsProvider: DynamicOptionsProvider { @Dependency private var modelCoordinator: ModelCoordinator @MainActor func results() async throws -> [String] { return modelCoordinator.tags().compactMap { $0.name } } } Now, the issue comes if I create a shortcut where for the tags parameter the user selects the magic variable Ask Each Time. On iOS, when the user is presented with the selector, they can simply tap 'Done' without selecting any value (the user does not want to include any tag). The problem is that on macOS the 'Done' button is disabled if there's no selection. See both behaviors: iOS: macOS: Question: Is there a way to let macOS continue even if the user doesn't select any of the available options like on iOS? I've tried declaring the tags para meter as Optional (like on the screenshot) and non-optional, both cases show the same behavior. Environment: iOS 18.5 macOS 15.5
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1
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301
Activity
Jul ’25
Glitch on buttons in all types of OS of Apple ecosystem
as a beta tester I am trying to explore the OS on multiple platforms like iO, iPadOS, MacOS, WatchOS. While on trying to use beta 1 have few issues and reported to Apple with analytics as I do for better improvements. But, in beta 2 there is an issue of glitches on UI. This also tried to report. But, while am trying record screen I can not see in that video after the screen record. But, in reality I can see that glitch with eyes. as everyone know without evidence we can not report the same with tickets properly and they also can not resolve the issues. It’s affecting on all types of OS platforms of Apple buttons and search positions etc. one more thing I absorbed is while am trying use overlay player and browse the safari or any apple developer apps which are full screen the devices are freezing and not responding and after hard restart those are starting after 10mins. As per my knowledge. Those are going through the memory overflow issue.
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0
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205
Activity
Jul ’25
MacBook Air (M2, 2023) Randomly Freezes After Sleep – Black Screen with Cursor Only
Since a recent macOS update (around one month ago), I’ve been experiencing a random issue on my MacBook Air (2023, M2). After the device enters sleep mode and I try to wake it, sometimes the screen stays black with only the cursor visible. The issue occurs randomly — not every time — but frequently enough to impact daily use. The system becomes completely unresponsive, and the only recovery method is a forced restart (holding the power button). Steps to Reproduce: 1. Leave the MacBook idle until it enters sleep automatically. 2. Wait for 10–30+ minutes. 3. Attempt to wake it using the keyboard, trackpad, or by opening the lid. 4. Randomly, the system fails to wake properly: screen turns on, shows a black background with a movable cursor, but nothing else appears. Expected Result: The system wakes normally and restores to the previous desktop session. Actual Result: The system randomly freezes on a black screen with a visible cursor. No user interface or login prompt appears. Requires a hard restart. System Information: • Device: MacBook Air 13”, M2, 2023 • macOS Version: [Insert exact version, e.g., macOS Sonoma 14.5] • Issue Since: Around one month ago (possibly after latest macOS update) • Peripherals: [Mention any external devices if applicable] • Reproducibility: Random (approximately 30–50% of the time after longer sleep) Additional Notes: • Issue is not consistent; sometimes the system wakes as expected. • Occurs regardless of whether on battery or plugged in. • No external monitors or USB accessories are connected when this happens.
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1
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326
Activity
Jun ’25
Are there any macOS APIs for setting the language of an accessibility element?
On iOS, there is accessibilityLanguage.
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1
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285
Activity
Jun ’25
Are there any macOS accessibility APIs for supporting scrolling in `NSAccessibilityScrollAreaRole` elements?
While it is possible to scroll content using VoiceOver on macOS, I was not able to find any NSAccessibility APIs related to it (such as accessibilityScroll: on iOS).
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2
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204
Activity
Jul ’25
Is it possible to animate the accessibility frame on iOS and macOS?
Say I have a UI element that moves on the screen. Is it possible to update its accessibility frame as it moves while VoiceOver is focused on it? From my tests, VoiceOver ignores UIAccessibilityLayoutChangedNotification if it's sent repeatedly in a short period of time on iOS, while sending NSAccessibilityLayoutChangedNotification on macOS triggers VoiceOver to reannounce the focused element repeatedly.
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2
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257
Activity
Jul ’25
Safari & Mail crashing under OS 26
As soon as I launch, Mail and Safari crash. I hope this is temporary. Tahoe 26.0 Beta
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2
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184
Activity
Jun ’25
MacOS Sequoia support for VoiceOver AppleScript automation
We are unable to programmatically enable AppleScript automation for VoiceOver on macOS 15 (Sequoia) In macOS 15, Apple moved the VoiceOver configuration from: ~/Library/Preferences/com.apple.VoiceOver4/default.plist to a sandboxed path: ~/Library/Group Containers/group.com.apple.VoiceOver/Library/Preferences/com.apple.VoiceOver4/default.plist Steps to Reproduce: Use a macOS 15 (ARM64) machine (or GitHub Actions runner image with macOS 15 ARM). Open VoiceOver: open /System/Library/CoreServices/VoiceOver.app Set the SCREnableAppleScript flag to true in the new sandboxed .plist: plutil -replace SCREnableAppleScript -bool true ~/Library/Group\ Containers/group.com.apple.VoiceOver/Library/Preferences/com.apple.VoiceOver4/default.plist Confirm csrutil status is either disabled or not enforced. Attempt to control VoiceOver via AppleScript (e.g., using osascript voiceOverPerform.applescript). Observe that the AppleScript command fails with no useful output (exit code 1), and VoiceOver does not respond to automation.
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3
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325
Activity
Jun ’25